With Lenny and a HP4100 PostScript printer, a two-pages-per-sheet spread printed by a2ps is cut off on both the left and the right.
A search with google reveals that a problem of this sort arose ten or twelve years ago, but I see no current reports. Papersize is configured for "letter" 8.5 x 11 inches. With previous distributions, a2ps has worked properly right out of the box. I have been running Jessie since it became available as "beta", but I did not notice the problem until recently, so perhaps an upgrade of a2ps is at fault? RLH